customer Invoices greater than >90 should move to different receivable account

Hello All,I have a customer requirement where "when a customer don’t pay his invoices for more than 90 days, we are supposed to move the related transactions in another receivable account which started with 416****.As in oracle we are using Dunning report to chase the customers, advise as how the system to move the transactions which are more than 90 days in the receivable account 416****, when we run the dunning letters how it will be possible in the system, that the 416**** account is hit when necessary?Ideally, we would like the account to be hit in the distribution lines window of the transaction if possible.If not, would you know another way to hit this account in AR?Thanks & RegardsRebecca.